My mom has a phd in math: hacked bus advert

Public transit ad depicting a brain: note pointing to one side says “Can you solve one of our puzzles” and the note pointing to the other side reads “can you explain it to your mom?”. Text below reads “We’re hiring hackers with people skills”. Someone has added a post-it note to the advertisement which reads “My mom has a PhD in math”

Public transit ad depicting a brain: note pointing to one side says “Can you solve one of our puzzles” and the note pointing to the other side reads “can you explain it to your mom?”. Text below reads “We’re hiring hackers with people skills”. Someone has added a post-it note to the advertisement which reads “My mom has a PhD in math”